Energy from Wastewater - Frequently Asked Questions
Why generate energy from wastewater?
Wastewater is available all year round and is characterized by a relatively constant temperature throughout the seasons, mostly between 12 °C and 20 °C.
By combining heat exchangers and heat pumps, the energy from waste water can be used for heating and cooling. Since about half of the energy requirement is used for heating and cooling, it is relevant to develop renewable energy sources. Since 2018, energy from wastewater has been classified as a renewable energy source at European level. Energy from wastewater has the potential to cover 10-14% of the heat demand in the building sector. The use of this environmental heat for heating is more efficient than using the outside air due to the higher temperature level in winter. In the summer, the waste water is cooler than the air. This and the good heat transfer properties of water enable energy from wastewater to be used efficiently as a renewable energy source for heating and cooling. By using energy from wastewater, CO2 emissions and operating costs can be reduced.
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